Most people assume the date on a diamond certificate is when it was bought. It’s not. It’s simply when it was graded by a lab like GIA or IGI.
That diamond could have been in the system for years before that.
Diamonds move through cutters, dealers, and wholesalers. They get passed around, grouped into parcels, held as stock, and only graded when they’re ready to be sold properly. Some move quickly. Others sit for a long time.
Why that matters
- “New” doesn’t mean recently mined
- Certification date can influence how something is priced
- Older stones can sometimes offer better value
- Two identical diamonds can have completely different histories
Most jewellers won’t explain this. They’re selling what’s already in the cabinet.
How we do it differently at London Diamonds
We don’t start with stock. We start with you.
We go into the global market and pull options specifically for your brief. Not just one or two. A proper selection.
Then we:
- Compare stones side by side
- Look at how they perform in real light, not just on paper
- Ignore “perfect” specs that don’t actually change what you see
- Find where the value actually sits, not where the margin is
Because we’re not tied to inventory, we’re not trying to sell you what we already own.
What that means for you
- You’re not limited to what’s in a shop
- You see diamonds you wouldn’t normally get access to
- You get more performance for your budget
- You avoid overpaying for things you’ll never see
The takeaway
The certificate tells you when a diamond was graded. It doesn’t tell you if it’s the right one.
That’s the part we handle.
